diff --git a/xlsx/scripts/office/schemas/ecma/fouth-edition/opc-contentTypes.xsd b/xlsx/scripts/office/schemas/ecma/fouth-edition/opc-contentTypes.xsd
new file mode 100644
index 0000000..9da3bc7
--- /dev/null
+++ b/xlsx/scripts/office/schemas/ecma/fouth-edition/opc-contentTypes.xsd
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
+ xmlns="http://schemas.openxmlformats.org/package/2006/content-types"
+ targetNamespace="http://schemas.openxmlformats.org/package/2006/content-types"
+ elementFormDefault="qualified">
+ <xsd:element name="Types" type="CT_Types"/>
+ <xsd:complexType name="CT_Types">
+  <xsd:choice minOccurs="0" maxOccurs="unbounded">
+   <xsd:element name="Default" type="CT_Default"/>
+   <xsd:element name="Override" type="CT_Override"/>
+  </xsd:choice>
+ </xsd:complexType>
+ <xsd:complexType name="CT_Default">
+  <xsd:attribute name="Extension" type="xsd:string" use="required"/>
+  <xsd:attribute name="ContentType" type="xsd:string" use="required"/>
+ </xsd:complexType>
+ <xsd:complexType name="CT_Override">
+  <xsd:attribute name="PartName" type="xsd:string" use="required"/>
+  <xsd:attribute name="ContentType" type="xsd:string" use="required"/>
+ </xsd:complexType>
+</xsd:schema>